Conveyer stop



Patented Feb. 4, 1941 UNETED STATES raient ortica 2 Claims.

This invention relates to improvements in stop motion devices for use with conveyers and the like moving belt arrangements.

The principal object o1 this invention is to provide means for automatically stopping the motion of a conveyer, belt, or the like when the con.- veyer breaks or otherwise becomes loose.

A further object of the invention is` to produce a device of this character which is simple to con- 0 struct and easy to install on any standard conveying apparatus Without materially altering its construction.

A further object of the invention is to produce a device of this character which is compact and, therefore, one which requires but little room in which to operate.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part 3.0 of this specication and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a side elevation of my device as the same would be applied adjacent the wheel of a l5 conveyer;

Fig. 2 is a top plan view of Fig. 1; Fig. 3 is an enlarged cross sectional view taken on the line 3 3 of Fig. 1; and

Fig. 4 is an enlarged cross sectional View taken 1 on the line ll-li of Fig. 1.

There are many industries wherein a conveyer or belt travels between two spaced pulleys for the purpose of transporting material on the upper n surface thereof from a point adjacent one of the pulleys to a point adjacent the other pulley. Sometimes these belts or conveyers are constructed of links travelling over sprockets instead of plain pulleys. Irrespective of the type of conveyer, considerable damage may occur should the conveyer break; and when the conveyer does break, it often requires many hours of labor to reinstall and repair the same.

I have, therefore, devised an apparatus which may be attached adjacent the conveyer and. which will actuate a stop motion device as soon as the conveyer breaks and a portion thereof comes into engagement with my device.

In the accompanying drawing wherein for the 50 purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a support upon which a bearing 6 is mounted. This bearing serves to support one of the spaced conveyer pulleys or sprockets, desig- 55 nated by the numeral 1, and over which the conveyer 8 passes. The construction thus far described is standard equipment.

My device consists of an arm 9 extending beneath the conveyer and being formed integral with a crank arm II pivoted in bearings l2 beneath the support 5. An upwardly extending lever I3 has its end I4 in engagement with a push rod I6 slidably mounted on the support 5. This push rod has a return bend Il which has its free end i8 extending through guide plates I9 supm ported on a bracket 2| mounted on the support 5. A slider 22 is mounted between the guide plates I9 and has -a nose Z3 in alignment with a push button 24 electrically connected to a circuit breaker (not shown). Pivoted as at 2B is 15 a lever 2'I, to the free end of which is? connected a weight 23, An arm 29, also connected to the lever 2l, bears against the back of the slider 22.

The result of this construction is that when the parts are in the position shown in full lines 30 in Fig. 1, the conveyer may operate in the usual manner. Should the conveyer break, the same will drop against the arm 9, causing the crank arm II to transmit motion through the lever I3 to the end I4, contacting the push rod I6, which will move the parts to the dotted line position of Fig. 1. As this occurs, the end I8 will be moved out of contact with the nose 23 of the slider 22 and also out of the path of movement of the slider. Therefore, the pivoted lever 21 Will drop, 30 because of the weight attached thereto, to the dotted line position of Fig. 3, causing Ithe arm 29 to push the slider toward the right of the ligure, bringing the nose 23 into engagement with the electrical button 24 which, when worked, will 35 serve to operate a circuit breaker to cut off power from driving the conveyer further.

It will thus be seen that I have produced a device which is extremely simple in construction and one which may be readily applied as above set forth.

It is to be understood that the form of my invention herewith shown and described is tol be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or .the scope of the subjoined claims.

Having thus described my invention, I claim: u

1. In combination with an endless conveyer, of a lever pivoted adjacent thereto and extending therebeneath, a push rod in alignment with one end of said pivoted lever and capable of endwise movement, said rod having a return bend at the 55 at the opposite end thereof from said alignment with said lever, a slider normally engaging the free end of said return bend, means for moving said slider when said free end is moved out of engagement with said slider through the actuation of said pivoted lever, sai-d Ymeans for moving said slider including a pivoted lever, a Weight connected to said pivoted lever, and an arm 'bearing against said slider to transmit movement thereto.

JAMES L. EISELSTEIN. 

